The owner of the Portland Timbers and Portland Thorns announced this week that he was leaving Twitter. If you’re not sure what to make of that, you’re not alone. UPDATE: After this story was published, Merritt Paulson got in touch to offer a little more information about his departure from Twitter. The article was updated accordingly. This is not an obituary for Merritt Paulson’s Twitter — in no small part because I fully expect the…